Historical exploit and vulnerability detection

Disclosed herein are representative embodiments of methods, apparatus, and systems for improving the functioning of IT assets in an IT infrastructure. The embodiments help secure and protect against outside cybersecurity attacks on IT assets and infrastructures, such as internet-centric attacks. Particular embodiments comprise detecting exploitable vulnerabilities of IT assets of an IT infrastructure, using the observed vulnerability data together with collected event log data to determine whether a respective vulnerability has actually been exploited for an asset, integrating change audit data and third-party threat data with the vulnerability data for exploited vulnerabilities, generating user interfaces/reports that display selected aspects of the integrated data, and/or modifying the asset to address the exploited vulnerability in response.